Wagon-spring



W.'R. ADAMS. Wagon Spring.

No. 238,478. Patented March 8,1881.

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UNTTED STATES PATENT OFFICE.

WALTER R. ADAMS, CF SHERMAN, CONNECTICUT.

WAGON-SPRING;

SPECIFICATION forming part of Letters Patent No. 238,478, dated March 8,1881. Application filed February 20, 1880.

To all whom it may concern Be it known that I, WALTER R. ADAMS, ofSherman, in Fairfield county, in the State of Connecticut, have inventeda new and useful Improvement in Wagon-Springs; and I do hereby declarethat the following is a full and exact description of the same,reference being had to the accompanying drawings, wherein Figure l is aperspective view of my improvement. Fig. 2 is a side elevation of thesame. Fig.3 is an elevation, showing the clip in section. I

The object of my invention is to provide a spring of variable resistanceto tlexure, whereby the strength or power of the spring may be adjustedas to the load which itmust carry and the excessive depression of thewagonbody under unusual load may be avoided.

My invention, therefore, consists in a wagonbody and side-bar frameprovided with connecting-sprin gs, which are rigidly fixed at one end tosaid side bar, and made variable as to tension by adjustable clips;also, in connection with the-above, cross-springs; and, also, in themode of attaching the first-named springs by bending them around theends of the side bars, so as to inclose the same.

That others may fully understand my invention, I will particularlydescribe it.

A is a wagon-body, and B B are the side bars, which, as usual, aremounted upon the running-gear by means of front and rear cross bars orbolsters, C. The bodyAis supported upon springs D, either directly or bymeans of intermediate cross springs, E, as may be preferred. The springD is attached to the side bar, B, near its ends, and, though notessential, I prefer to lap the end of said spring over the end of theside bar, so that the latter is thereby inclosed between the folds of.close the end of said bar,

the spring, (see Fig. 3,) and is thereby relieved of a large portion ofthe strain to which it would otherwise be subjected.

The spring D may be attached to the side bar by means of screws orbolts, if desired; but the principal means of attachment is theadjustable collar or clip F, whichincloses both spring and side bar. Aset-screw, 9, serves to fasten the clip F in place, and permits it to bemade fast or loose at pleasure. When loose it maybe moved forward orbackward, and its position determines thelength, and consequently thepower, of the free end of the spring D. Hence, when the wagon is aboutto bear an unusual load the clip may be moved to shorten the spring, andthe load will then be carried as high and as easily as a lighterloadwould be carried with a longer spring.

Having described my invention, what I claim is- 1. A wagon-body, A, andside-bar frameB C, connected thereto by means of springs D, rigidlyconnected at one end to said side bars, combined with adjustableclamping-clips F, whereby the effective or free length and strength ofsaid springs may be independent- 1y varied.

2. The wagon-body A, and frame composed of bars B B and C C, combinedwith springs D D, which are made adjustable by means of the movableclampingclips F and the crosssprings E, substantially as set forth.

3. The side bar, B, combined with the spring D, the fixed end whereof isturned over to inand rigidly secured thereto, as set forth.

WALTER R. ADAMS.

Witnesses:

C. E. MASON, LEVI P. TREADWELL.

